What is the population the great lakes ecosystem?

The Great Lakes ecosystem encompasses a diverse range of species, including over 3,500 species of plants and animals. Notably, it supports a significant number of fish species, such as perch, walleye, and salmon, along with various birds, mammals, and invertebrates. Additionally, the region is home to millions of people, with approximately 40 million residents living in the surrounding areas, relying on the lakes for drinking water, recreation, and economic activities. The ecosystem's health is vital for both wildlife and human populations.